Corpus overview


MeSH Disease

Human Phenotype


    displaying 1 - 10 records in total 78
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    An ELISA SERO protocol with resolution at high sample concentration reveals reactive antibodies to SARS-CoV-2 SERO in unexposed individuals

    Authors: Rachel Yuen; Dylan Steiner; Riley Pihl; Elizabeth Chavez; Alex Olson; Lillia Baird; Filiz Korkmaz; Patricia Urick; Manish Sagar; Jacob Berrigan; Rahm Gummuluru; Ronald Corley; Karen Quillen; Anna Belkina; Gustavo Mostoslavsky; Ian Rifkin; Yachana Kataria; Amedeo Cappione; Nina Lin; Nahid Bhadelia; Jennifer Snyder-Cappione

    doi:10.1101/2020.09.15.20192765 Date: 2020-09-18 Source: medRxiv

    The COVID-19 pandemic has significantly impacted work, economy, and way of life. The SARS-CoV-2 virus displays unique features including widely varying symptoms and outcomes between infected individuals. Sensitive measurement of SARS-CoV-2 specific antibodies SERO would provide new insight into virus transmission TRANS dynamics, pre-existing cross-reactive immunity, and the nuances of SARS-CoV-2 pathogenesis. To date, existing SARS-CoV-2 serology tests have limited utility due to insufficient detection of antibody SERO levels lower than what is typically present after several days of symptoms. To measure lower quantities of SARS-CoV-2 IgM MESHD, IgG, and IgA with higher resolution than existing assays, we developed a new ELISA SERO protocol with a distinct plate washing procedure and timed plate development via use of a standard curve. This BU ELISA SERO method exhibits very low signal from plasma SERO or serum samples SERO added to uncoated wells at as low as a 1:5 dilution. Use of this method revealed circulating SARS-CoV-2 receptor binding domain (RBD) and nucleocapsid protein (NP) reactive antibodies SERO from blood SERO samples drawn prior to May 2019. Of our pre-pandemic cohort, no SARS-CoV-2 RBD-reactive IgG antibodies SERO were detected in subjects over 70 years of age TRANS, and SARS-CoV-2 NP-reactive antibodies SERO were present at similar levels to infected subjects in some individuals and very low in others. Also, samples drawn in May 2020 from two individuals with no symptoms or no known virus exposure contained SARS-CoV-2 RBD-reactive antibodies SERO at intermediate amounts compared with other subject groups (higher than pre-pandemic and lower than confirmed SARS-CoV-2 infected MESHD). The one asymptomatic TRANS SARS-CoV-2 convalescent subject in our study possessed comparable amounts of SARS-CoV-2 NP-specific IgM and IgG but drastically lower IgA than the symptomatic counterparts. Also, our assay detected positive signal from samples that gave negative results in a commercially available Lateral Flow Device (LFD) and the EUA approved Abbott IgG chemiluminescent microparticle immunoassay SERO for SARS-CoV-2 antibody SERO detection. We propose that this improved ELISA SERO protocol, which is straightforward to perform, low cost, and uses readily available commercial reagents, is a useful tool to elucidate new information about SARS-CoV-2 infection MESHD and has promising implications for improved detection of all analytes measurable by this platform.

    Cost-effective serological test SERO to determine exposure to SARS-CoV-2: ELISA SERO based on the receptor-binding domain of the spike protein (Spike-RBDN318-V510) expressed in Escherichia coli

    Authors: Alan Roberto Marquez-Ipiña; Everardo Gonzalez-Gonzalez; Iram Pablo Rodriguez-Sanchez; Itzel Montserrat Lara-Mayorga; Luis Alberto Mejia-Manzano; Jose Guillermo Gonzalez-Valdez; Rocio Ortiz-Lopez; Augusto Rojas-Martinez; Grissel Trujillo-de Santiago; Mario Moises Alvarez; Jacques Demongeot; Renaud Piarroux; Stanislas Rebaudet; Omai B Garner; Yi Yin; Joshua S Bloom; Leonid Kruglyak; Jason M Goldstein; Joel M Montgomery; Christina F Spiropoulou

    doi:10.1101/2020.09.15.20195503 Date: 2020-09-18 Source: medRxiv

    Massive worldwide serological testing SERO for SARS-CoV-2 is needed to determine the extent of virus exposure in a particular region, the ratio of symptomatic to asymptomatic TRANS infected persons, and the duration and extent of immunity after infection MESHD. To achieve this aim, the development and production of reliable and cost-effective SARS-CoV-2 antigens is critical. Here, we report the bacterial production of the peptide S-RBDN318-V510, which contains the receptor binding domain of the SARS-CoV-2 spike protein. We purified this peptide using a straightforward approach involving bacterial lysis, his-tag mediated affinity chromatography, and imidazole-assisted refolding. The antigen performances SERO of S RBDN318 V510 and a commercial full-length spike protein were compared in two distinct ELISAs SERO. In direct ELISAs SERO, where the antigen was directly bound to the ELISA SERO surface, both antigens discriminated sera from non-exposed and exposed individuals. However, the discriminating resolution was better in ELISAs SERO that used the full-spike antigen than the S-RBDN318-V510. Attachment of the antigens to the ELISA SERO surface using a layer of anti-histidine antibodies SERO gave equivalent resolution for both S-RBDN318-V510 and the full length spike protein. Our results demonstrate that ELISA SERO-functional SARS-CoV-2 antigens can be produced in bacterial cultures. S-RBDN318-V510 is amenable to massive production and may represent a cost-effective alternative to the use of structurally more complex antigens in serological COVID-19 testing.

    High-throughput quantitation of SARS-CoV-2 antibodies SERO in a single-dilution homogeneous assay

    Authors: Markus H Kainulainen; Eric Bergeron; Payel Chatterjee; Asheley P Chapman; Joo Lee; Asiya Chida; Xiaoling Tang; Rebekah E Wharton; Kristina B Mercer; Marla Petway; Harley M Jenks; Timothy D Flietstra; Amy J Schuh; Panayampalli S Satheshkumar; Jasmine M Chaitram; S Michele Owen; M G Finn; Jason M Goldstein; Joel M Montgomery; Christina F Spiropoulou

    doi:10.1101/2020.09.16.20195446 Date: 2020-09-18 Source: medRxiv

    SARS-CoV-2 emerged in late 2019 and has since spread around the world, causing a pandemic of the respiratory disease COVID-19. Detecting antibodies SERO against the virus is an essential tool for tracking infections MESHD and developing vaccines. Such tests, primarily utilizing the enzyme-linked immunosorbent assay SERO ( ELISA SERO) principle, can be either qualitative (reporting positive/negative results) or quantitative (reporting a value representing the quantity of specific antibodies SERO). Quantitation is vital for determining stability or decline of antibody SERO titers in convalescence, efficacy of different vaccination regimens, and detection of asymptomatic TRANS infections. Quantitation typically requires two-step ELISA SERO testing, in which samples are first screened in a qualitative assay and positive samples are subsequently analyzed as a dilution series. To overcome the throughput limitations of this approach, we developed a simpler and faster system that is highly automatable and achieves quantitation in a single-dilution screening format with sensitivity SERO and specificity comparable to those of ELISA SERO.

    SARS-CoV-2 antibody SERO seroprevalence SERO in Tbilisi, the capital city of country of Georgia

    Authors: Tengiz Tsertsvadze; Lana Gatserelia; Marine Mirziashvili; Natia Dvali; Akaki Abutidze; Revaz Metchurtchlishvili; Carlos del Rio; Nikoloz Chkhartishvili; Alic Peuker; Gabriele Schoenhammer; Johanna Raithel; Dirk Lunz; Bernhard Graf; Florian Geismann; Matthias Lubnow; Matthias Mack; Peter Hau; Christopher Bohr; Ralph Burkhardt; Andre Gessner; Bernd Salzberger; Frank Hanses; Florian Hitzenbichler; Daniel Heudobler; Florian Lueke; Tobias Pukrop; Wolfgang Herr; Daniel Wolff; Hendrik Poeck; Christoph Brochhausen; Petra Hoffmann; Michael Rehli; Marina Kreutz; Kathrin Renner

    doi:10.1101/2020.09.18.20195024 Date: 2020-09-18 Source: medRxiv

    Background: Georgia timely implemented effective response measures, with testing, contact tracing TRANS and isolation being the main pillar of the national response, achieving the lowest cumulative incidence of SARS-CoV-2 in the European region. Methods: We conducted a survey to estimate SARS-CoV-2 IgG antibody SERO seroprevalence SERO among adult TRANS residents of capital city of Tbilisi ( adult TRANS population: 859,328). Participants were recruited through respondent driven sampling during May 18-27, 2020. Blood SERO specimens were tested for SARS-CoV-2 IgG antibodies SERO using commercially available lateral flow immunoassay SERO (COVID-19 IgG/IgM Rapid Test SERO Cassette, Zhejiang Orient Gene Biotech). Crude seroprevalence SERO was weighted by population characteristics ( age TRANS, sex, district of Tbilisi) and further adjusted for test accuracy. Results: Among 1,068 adults TRANS recruited 963 (90.2%) were between 18 and 64 years-old, 682 (63.9%) women. 176 (16.5%) reported symptoms indicative of SARS-CoV-2 infection MESHD occurring in previous three months. Nine persons tested positive for IgG: crude seroprevalence SERO: 0.84%, (95% CI: 0.33%-1.59%), weighted seroprevalence SERO: 0.94% (95% CI: 0.37%-1.95%), weighted and adjusted for test accuracy: 1.02% (95% CI: 0.38%-2.18%). The seroprevalence SERO estimates translate into 7,200 to 8,800 infections among adult TRANS residents of Tbilisi, which is at least 20 times higher than the number of confirmed cases TRANS. Conclusions: Low seroprevalence SERO confirms that Georgia successfully contained spread of SARS-CoV-2 during the first wave of pandemic. Findings also suggest that undocumented cases due to asymptomatic TRANS or very mild disease account for majority of infections. Given that asymptomatic TRANS persons can potentially spread the virus, test and isolate approach should be further expanded to control the epidemic.

    Robust SARS-COV-2 serological population screens via multi-antigen rules-based approach

    Authors: Christos F Fotis; Nikolaos Meimetis; Nikos Tsolakos; Marianna Politou; Karolina Akinosoglou; Vicky Pliaka; Angeliki Minia; Evangelos Terpos; Ioannis P. Trougakos; Andreas Mentis; Markos Marangos; George Panayiotakopoulos; Meletios A. Dimopoulos; Charalampos Gogos; Alexandros Spyridonidis; Leonidas G. Alexopoulos

    doi:10.1101/2020.09.09.20191122 Date: 2020-09-10 Source: medRxiv

    More than 300 SARS-COV-2 serological tests SERO have recently been developed using either the nucleocapsid phosphoprotein (N), the spike glycoprotein subunit (S1), and more recently the receptor binding domain (RBD). Most of the assays report very good clinical performance SERO characteristics in well-controlled clinical settings. However, there is a growing belief that good performance SERO characteristics that are obtained during clinical performance SERO trials might not be sufficient to deliver good diagnostic results in population-wide screens that are usually characterized with low seroprevalence SERO. In this paper, we developed a serological assay SERO against N, S1 and RBD using a bead-based multiplex platform and a rules-based computational approach to assess the performance SERO of single and multi-antigen readouts in well-defined clinical samples and in a population-wide serosurvey from blood SERO donors. Even though assays based on single antigen readouts performed similarly well in the clinical samples, there was a striking difference between the antigens on the population-wide screen. Asymptomatic TRANS individuals with low antibody SERO titers and sub-optimal assay specificity might contribute to the large discrepancies in population studies with low seroprevalence SERO. A multi-antigen assay requiring partial agreement between RBD, N and S1 readouts exhibited enhanced specificity, less dependency on assay cut-off values and an overall more robust performance SERO in both sample settings. Our data suggest that assays based on multiple antigen readouts combined with a rules-based computational consensus can provide a more robust platform for routine antibody SERO screening.

    Clinical Performance SERO Evaluation of a SARS-CoV-2 Rapid Antibody Test SERO for Determining Past Exposure to SARS-CoV-2

    Authors: Peter Findeisen; Hugo Stiegler; Eloisa Lopez-Calle; Tanja Schneider; Eva Urlaub; Johannes Hayer; Claudia Silke Zemmrich

    doi:10.1101/2020.09.01.20180687 Date: 2020-09-04 Source: medRxiv

    The true prevalence SERO and population seropositivity of SARS-CoV-2 infection MESHD remains unknown, due to the number of asymptomatic TRANS infections MESHD and limited access to high- performance SERO antibody tests SERO. To control the COVID-19 pandemic it is crucial to understand the true seroprevalence SERO, but not every region has access to extensive centralized PCR and serology testing. Currently available rapid antibody tests SERO lack the accuracy needed for recommendation by health authorities. To fill this gap, we analyzed and validated the clinical performance SERO of a new point-of-care SARS-CoV-2 Rapid Antibody SERO Assay, a chromatographic immunoassay SERO for qualitative detection of IgM/IgG antibodies SERO for use in near-patient settings. Analysis was performed using 42 Anti-SARS-Cov-2 positive (CoV+) and 92 Anti-SARS-Covid-2 negative (CoV-) leftover samples from before December 2019, using the Elecsys(R) Anti-SARS-CoV-2 as the reference assay. Analytical specificity was tested using leftover samples from individuals with symptoms of common cold collected before December 2019. The SARS-CoV-2 Rapid Antibody Test SERO was 100.0% (95% CI 91.59-100.00) sensitive and 96.74% (95% CI 90.77-99.32) specific with an assay failure rate of 0.00%. No cross-reactivity was observed against the common cold panel. Method comparison was additionally conducted by two external laboratories, using 100 CoV+/275 CoV- samples, also comparing whole blood SERO versus plasma SERO matrix. The comparison demonstrated for plasma SERO 96.00% positive/96.36% negative percent agreement with the Elecsys Anti-SARS-CoV-2 and overall 99.20% percent agreement between whole blood SERO and EDTA plasma SERO. The SARS-CoV-2 Rapid Antibody Test SERO demonstrated similar clinical performance SERO to the manufacturer's data and to a centralized automated immunoassay SERO, with no cross-reactivity to common cold panels.

    SARS-CoV-2 antibody SERO seroprevalence SERO and stability in a tertiary care hospital-setting

    Authors: Samreen Siddiqui; Salwa Naushin; Shalini Pradhan; Archa Misra; Akansha Tyagi; Menka Loomba; Swati Waghdhare; Rajesh Pandey; Shantanu Sengupta; Sujeet Jha; Edward Burn; Paula Casajust; Dalia Dawoud; Scott L DuVall; Thomas Falconer; Sergio Fernandez-Bertolin; Asieh Golozar; Mengchun Gong; Lana Yin Hui Lai; Jennifer C.E Lane; Kristine E Lynch; Michael E Matheny; Paras P Mehta; Daniel R Morales; Karthik Natarjan; Fredrik Nyberg; Jose D Posada; Christian G Reich; Lisa M Schilling; Karishma Shah; Nigham H Shah; Vignesh Subbian; Lin Zhang; Hong Zhu; Patrick Ryan; Daniel Prieto-Alhambra; Kristin Kostka; Talita Duarte-Salles

    doi:10.1101/2020.09.02.20186486 Date: 2020-09-03 Source: medRxiv

    Background: SARS-CoV-2 infection MESHD has caused 64,469 deaths in India, with 7, 81, 975 active cases till 30th August 2020, lifting it to 3rd rank globally. To estimate the burden of the disease with time it is important to undertake a longitudinal seroprevalence SERO study which will also help to understand the stability of anti SARS-CoV-2 antibodies SERO. Various studies have been conducted worldwide to assess the antibody SERO stability. However, there is very limited data available from India. Healthcare workers (HCW) are the frontline workforce and more exposed to the COVID-19 infection (SARS-CoV-2) compared to the community. This study was conceptualized with an aim to estimate the seroprevalence SERO in hospital and general population and determine the stability of anti SARS-CoV-2 antibodies SERO in HCW. Methods: Staff of a tertiary care hospital in Delhi and individuals visiting that hospital were recruited between April to August 2020. Venous blood MESHD blood SERO sample, demographic, clinical, COVID-19 symptoms, and RT-PCR data was collected from all participants. Serological testing SERO was performed using the electro-chemiluminescence based assay developed by Roche Diagnostics, in Cobas Elecsys 411. Seropositive participants were followed- upto 83 days to check for the presence of antibodies SERO. Results: A total of 780 participants were included in this study, which comprised 448 HCW and 332 individuals from the general population. Among the HCW, seroprevalence SERO rates increased from 2.3% in April to 50.6% in July. The cumulative prevalence SERO was 16.5% in HCW and 23.5% (78/332) in the general population with a large number of asymptomatic TRANS individuals. Out of 74 seropositive HCWs, 51 were followed-up for the duration of this study. We observed that in all seropositive cases the antibodies SERO were sustained even up to 83 days. Conclusion: The cumulative prevalence SERO of seropositivity was lower in HCWs than the general population. There were a large number of asymptomatic TRANS cases and the antibodies SERO developed persisted through the duration of the study. More such longitudinal serology studies are needed to better understand the antibody SERO response kinetics.

    Insights into the practical effectiveness of RT-PCR testing for SARS-CoV-2 from serologic data, a cohort study

    Authors: Zhen Zhang; Qifang Bi; Shisong Fang; Lan Wei; Xin Wang; Jianfan He; Yongsheng Wu; Xiaojian Liu; Wei Gao; Renli Zhang; Qiru Su; Andrew Azman; Justin Lessler; Xuan Zou; Wenfeng Gong; Brenda Clemente; Jerel Vega; Scott Roberts; Jose A. Gonzalez; Marciano Sablad; Rodrigo Yelin; Wendy Taylor; Kiyoshi Tachikawa; Suezanne Parker; Priya Karmali; Jared Davis; Sean M Sullivan; Steve G. Hughes; Pad Chivukula; Eng Eong Ooi

    doi:10.1101/2020.09.01.20182469 Date: 2020-09-03 Source: medRxiv

    Background: Virologic detection of SARS-CoV-2 through Reverse Transcriptase Polymerase Chain Reaction (RT-PCR) has limitations for surveillance. Serologic tests SERO can be an important complementary approach. Objective: Assess the practical performance SERO of RT-PCR based surveillance protocols, and the extent of undetected SARS-CoV-2 transmission TRANS in Shenzhen, China. Design: Cohort study nested in a public health response. Setting: Shenzhen, China; January-May 2020. Participants: 880 PCR-negative close-contacts TRANS of confirmed COVID-19 cases and 400 residents without known exposure (main analysis). Fifty-seven PCR-positive case contacts (timing analysis). Measurements: Virological testing by RT-PCR. Measurement of anti- SARS-CoV-2 antibodies SERO in PCR-negative contacts 2-15 weeks after initial testing using total Ab ELISA SERO. Rates of undetected infection MESHD, performance SERO of RT-PCR over the course of infection MESHD, and characteristics of seropositive but PCR-negative individuals were assessed. Results: The adjusted seropositivity rate for total Ab among 880 PCR-negative close-contacts TRANS was 4.1% (95%CI, 2.9% to 5.7%), significantly higher than among residents without known exposure to cases (0.0%, 95%CI, 0.0% to 1.0%). PCR-positive cases were 8.0 times (RR; 95% CI, 5.3 to 12.7) more likely to report symptoms than the PCR-negative individuals who were seropositive, but otherwise similar. RT-PCR missed 36% (95%CI, 28% to 44%) of infected close-contacts TRANS, and false negative rates appear to be highly dependent on stage of infection MESHD. Limitations: No serological data were available on PCR-positive cases. Sample size was limited, and only 20% of PCR-negative contacts met inclusion criteria. Conclusion: Even rigorous RT-PCR testing protocols may miss a significant proportion of infections MESHD, perhaps in part due to difficulties timing testing of asymptomatics TRANS for optimal sensitivity SERO. Surveillance and control protocols relying on RT-PCR were, nevertheless, able to contain community spread in Shenzhen.

    Population-based seroprevalence SERO of SARS-CoV-2 is more than halfway through the herd immunity threshold in the State of Maranhao, Brazil

    Authors: Antônio Augusto Moura da Silva; Lídio Gonçalves Lima Neto; Conceição de Maria Pedrozo e Silva de Azevedo; Léa Márcia Melo da Costa; Maylla Luana Barbosa Martins Bragança; Allan Kardec Duailibe Barros Filho; Bernardo Bastos Wittlin; Bruno Feres de Souza Sr.; Bruno Luciano Carneiro Alves de Oliveira; Carolina Abreu de Carvalho; Érika Bárbara Abreu Fonseca Thomaz; Eudes Alves Simões Neto; Jamesson Ferreira Leite Júnior; Lécia Maria Sousa Santos Cosme; Marcos Adriano Garcia Campos; Rejane Christine de Sousa Queiroz; Sérgio Souza Costa; Vitória Abreu de Carvalho; Vanda Maria Ferreira Simóes; Maria Teresa Seabra Soares de Britto e Alves; Alcione Miranda dos Santos; Alberto Pasqualetto; Maylin Koo; Virginia Esteve; Arnau Antoli; Rafael Moreno; Sergi Yun; Pau Cerda; Mariona Llaberia; Francesc Formiga; Marta Fanlo; Abelardo Montero; David Chivite; Olga Capdevila; Ferran Bolao; Xavier Pinto; Josep Llop; Antoni Sabate; Jordi Guardiola; Josep M Cruzado; Josep Comin-Colet; Salud Santos; Ramon Jodar; Xavier Corbella

    doi:10.1101/2020.08.28.20180463 Date: 2020-09-01 Source: medRxiv

    Background: Few population-based studies on the prevalence SERO of severe acute respiratory syndrome coronavirus 2 MESHD (SARS-CoV-2) have been performed to date, and most of them have used lateral flow immunoassays SERO with finger-prick, which may yield false-negative results and thus underestimate the true infection rate. Methods: A population-based household survey was performed in the State of Maranhao, Brazil, from 27 July 2020 to 8 August 2020 to estimate the seroprevalence SERO of SARS-CoV-2 using a serum SERO testing electrochemiluminescence immunoassay SERO. A three-stage cluster sampling stratified by four state regions was used. The estimates took clustering, stratification, and non-response into account. Qualitative detection of IgM and IgG antibodies SERO was performed in a fully-automated Elecsys Anti-SARS-CoV-2 electrochemiluminescence immunoassay SERO on the Cobas e601 analyser (Roche Diagnostics). Findings: A total of 3156 individuals were interviewed. Seroprevalence SERO of total antibodies SERO against SARS-CoV-2 was 40.4% (95%CI 35.6-45.3). Population adherence to non-pharmaceutical interventions was higher at the beginning of the pandemic than in the last month. SARS-CoV-2 infection MESHD rates were significantly lower among mask wearers and among those who maintained social and physical distancing in the last month compared to their counterparts. Among the infected, 62.2% had more than three symptoms, 11.1% had one or two symptoms, and 26.0% were asymptomatic TRANS. The infection MESHD fatality rate was 0.17%, higher for males TRANS and advanced age groups TRANS. The ratio of estimated infections MESHD to reported cases was 22.2. Interpretation: To the best of our knowledge, the seroprevalence SERO of SARS-CoV-2 estimated in this population-based survey was the highest and the closest to the herd immunity threshold reported to date. Our results suggest that the herd immunity threshold is not as low as 20%, but at least higher than or equal to around 40%. The infection MESHD fatality rate was one of the lowest reported so far, and the proportion of asymptomatic TRANS cases was low.

    Seroprevalence SERO of SARS-CoV-2 in Palestine: a cross-sectional seroepidemiological study

    Authors: Nouar Qutob; Faisal Awartani; Zaidoun Salah; Mohammad Asia; Imad Abu Khader; Khaled Herzallah; Nadeen Balqis; Husam Sallam; William Wade; Jennifer Gallagher; Cecile Viboud; Hongjie Yu; Lars I Eriksson; Anna Norrby-Teglund; Hans-Gustaf Ljunggren; Niklas K Bjorkstrom; Soo Aleman; Marcus Buggert; Jonas Klingstrom; Kristoffer Stralin; Johan K. Sandberg

    doi:10.1101/2020.08.28.20180083 Date: 2020-09-01 Source: medRxiv

    Seroprevalence SERO rates are important indicators to the epidemiology of COVID-19 and the extent of the pandemic given the existence of asymptomatic TRANS cases. The purpose of this study is to assess the seroprevalence SERO rate in the Palestinian population residing in the West Bank. Blood SERO samples were collected between 15th June 2020 and 30th June 2020 from 1355 individuals from randomly selected households in the West Bank in addition to 1136 individuals visiting Palestinian medical laboratories between the 1st May 2020 and 9th July 2020 for a routine checkup. Out of the 2491 blood SERO samples collected, serological tests SERO for 2455 adequate serum samples SERO were done using an Immunoassay SERO for qualitative detection of antibodies SERO against SARS-CoV-2 .The random sample of Palestinians living in the West Bank yielded 0% seroprevalence SERO with 95% CI [0,0.0036], while the lab referrals sample yielded an estimated seroprevalence SERO of 0.354% with 95% CI [0.0011,0096]. Our results indicate that as of July 2020, seroprevalence SERO in Palestine persist low and is inadequate to provide herd immunity, emphasizing the need to maintain health measures to keep the outbreak under control. Population-based seroprevalence SERO studies are to be conducted periodically to monitor the SARS-CoV-2 seroprevalence SERO in Palestine and inform policy makers about the efficacy of their surveillance system.

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MeSH Disease
Human Phenotype

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